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+/**
+ * @file llwaterparammanager.h
+ * @brief Implementation for the LLWaterParamManager class.
+ *
+ * $LicenseInfo:firstyear=2007&license=viewergpl$
+ * 
+ * Copyright (c) 2007-2007, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_WATER_PARAMMANAGER_H
+#define LL_WATER_PARAMMANAGER_H
+
+#include <vector>
+#include <map>
+#include "llwaterparamset.h"
+#include "llviewercamera.h"
+#include "v4color.h"
+
+const F32 WATER_FOG_LIGHT_CLAMP = 0.3f;
+
+// color control
+struct WaterColorControl {
+	
+	F32 mR, mG, mB, mA, mI;			/// the values
+	char const * mName;				/// name to use to dereference params
+	std::string mSliderName;		/// name of the slider in menu
+	bool mHasSliderName;			/// only set slider name for true color types
+
+	inline WaterColorControl(F32 red, F32 green, F32 blue, F32 alpha,
+		F32 intensity, char const * n, char const * sliderName = "")
+		: mR(red), mG(green), mB(blue), mA(alpha), mI(intensity), mName(n), mSliderName(sliderName)
+	{
+		// if there's a slider name, say we have one
+		mHasSliderName = false;
+		if (mSliderName != "") {
+			mHasSliderName = true;
+		}
+	}
+
+	inline WaterColorControl & operator = (LLColor4 const & val) 
+	{
+		mR = val.mV[0];
+		mG = val.mV[1];
+		mB = val.mV[2];
+		mA = val.mV[3];		
+		return *this;
+	}
+
+	inline operator LLColor4 (void) const
+	{
+		return LLColor4(mR, mG, mB, mA);
+	}
+
+	inline WaterColorControl & operator = (LLVector4 const & val) 
+	{
+		mR = val.mV[0];
+		mG = val.mV[1];
+		mB = val.mV[2];
+		mA = val.mV[3];		
+		return *this;
+	}
+
+	inline operator LLVector4 (void) const 
+	{
+		return LLVector4(mR, mG, mB, mA);
+	}
+
+	inline operator LLVector3 (void) const 
+	{
+		return LLVector3(mR, mG, mB);
+	}
+
+	inline void update(LLWaterParamSet & params) const 
+	{
+		params.set(mName, mR, mG, mB, mA);
+	}
+};
+
+struct WaterVector3Control 
+{
+	F32 mX;
+	F32 mY;
+	F32 mZ;
+
+	char const * mName;
+
+	// basic constructor
+	inline WaterVector3Control(F32 valX, F32 valY, F32 valZ, char const * n)
+		: mX(valX), mY(valY), mZ(valZ), mName(n)
+	{
+	}
+
+	inline WaterVector3Control & operator = (LLVector3 const & val) 
+	{
+		mX = val.mV[0];
+		mY = val.mV[1];
+		mZ = val.mV[2];
+
+		return *this;
+	}
+
+	inline void update(LLWaterParamSet & params) const 
+	{
+		params.set(mName, mX, mY, mZ);
+	}
+
+};
+
+struct WaterVector2Control 
+{
+	F32 mX;
+	F32 mY;
+
+	char const * mName;
+
+	// basic constructor
+	inline WaterVector2Control(F32 valX, F32 valY, char const * n)
+		: mX(valX), mY(valY), mName(n)
+	{
+	}
+
+	inline WaterVector2Control & operator = (LLVector2 const & val) 
+	{
+		mX = val.mV[0];
+		mY = val.mV[1];
+
+		return *this;
+	}
+
+	inline void update(LLWaterParamSet & params) const 
+	{
+		params.set(mName, mX, mY);
+	}
+};
+
+// float slider control
+struct WaterFloatControl 
+{
+	F32 mX;
+	char const * mName;
+	F32 mMult;
+
+	inline WaterFloatControl(F32 val, char const * n, F32 m=1.0f)
+		: mX(val), mName(n), mMult(m)
+	{
+	}
+
+	inline WaterFloatControl & operator = (LLVector4 const & val) 
+	{
+		mX = val.mV[0];
+
+		return *this;
+	}
+
+	inline operator F32 (void) const 
+	{
+		return mX;
+	}
+
+	inline void update(LLWaterParamSet & params) const 
+	{
+		params.set(mName, mX);
+	}
+};
+
+// float slider control
+struct WaterExpFloatControl 
+{
+	F32 mExp;
+	char const * mName;
+	F32 mBase;
+
+	inline WaterExpFloatControl(F32 val, char const * n, F32 b)
+		: mExp(val), mName(n), mBase(b)
+	{
+	}
+
+	inline WaterExpFloatControl & operator = (F32 val) 
+	{
+		mExp = log(val) / log(mBase);
+
+		return *this;
+	}
+
+	inline operator F32 (void) const 
+	{
+		return pow(mBase, mExp);
+	}
+
+	inline void update(LLWaterParamSet & params) const 
+	{
+		params.set(mName, pow(mBase, mExp));
+	}
+};
+
+
+/// WindLight parameter manager class - what controls all the wind light shaders
+class LLWaterParamManager
+{
+public:
+
+	LLWaterParamManager();
+	~LLWaterParamManager();
+
+	/// load a preset file
+	void loadAllPresets(const LLString & fileName);
+
+	/// load an individual preset into the sky
+	void loadPreset(const LLString & name);
+
+	/// save the parameter presets to file
+	void savePreset(const LLString & name);
+
+	/// send the parameters to the shaders
+	void propagateParameters(void);
+
+	/// update information for the shader
+	void update(LLViewerCamera * cam);
+
+	/// Update shader uniforms that have changed.
+	void updateShaderUniforms(LLGLSLShader * shader);
+
+	/// Perform global initialization for this class.
+	static void initClass(void);
+
+	// Cleanup of global data that's only inited once per class.
+	static void cleanupClass();
+
+	/// add a param to the list
+	bool addParamSet(const std::string& name, LLWaterParamSet& param);
+
+	/// add a param to the list
+	BOOL addParamSet(const std::string& name, LLSD const & param);
+
+	/// get a param from the list
+	bool getParamSet(const std::string& name, LLWaterParamSet& param);
+
+	/// set the param in the list with a new param
+	bool setParamSet(const std::string& name, LLWaterParamSet& param);
+	
+	/// set the param in the list with a new param
+	bool setParamSet(const std::string& name, LLSD const & param);	
+
+	/// gets rid of a parameter and any references to it
+	/// returns true if successful
+	bool removeParamSet(const std::string& name, bool delete_from_disk);
+
+	/// set the normap map we want for water
+	bool setNormalMapID(const LLUUID& img);
+
+	void setDensitySliderValue(F32 val);
+
+	/// getters for all the different things water param manager maintains
+	LLUUID getNormalMapID(void);
+	LLVector2 getWave1Dir(void);
+	LLVector2 getWave2Dir(void);
+	F32 getScaleAbove(void);
+	F32 getScaleBelow(void);
+	LLVector3 getNormalScale(void);
+	F32 getFresnelScale(void);
+	F32 getFresnelOffset(void);
+	F32 getBlurMultiplier(void);
+	F32 getFogDensity(void);
+	LLColor4 getFogColor(void);
+
+	// singleton pattern implementation
+	static LLWaterParamManager * instance();
+
+public:
+
+	LLWaterParamSet mCurParams;
+
+	/// Atmospherics
+	WaterColorControl mFogColor;
+	WaterExpFloatControl mFogDensity;
+	WaterFloatControl mUnderWaterFogMod;
+
+	/// wavelet scales and directions
+	WaterVector3Control mNormalScale;
+	WaterVector2Control mWave1Dir;
+	WaterVector2Control mWave2Dir;
+
+	// controls how water is reflected and refracted
+	WaterFloatControl mFresnelScale;
+	WaterFloatControl mFresnelOffset;
+	WaterFloatControl mScaleAbove;
+	WaterFloatControl mScaleBelow;
+	WaterFloatControl mBlurMultiplier;
+	
+	// list of all the parameters, listed by name
+	std::map<std::string, LLWaterParamSet> mParamList;
+
+	F32 mDensitySliderValue;
+
+private:
+	// our parameter manager singleton instance
+	static LLWaterParamManager * sInstance;
+
+private:
+
+	LLVector4 mWaterPlane;
+	F32 mWaterFogKS;
+};
+
+inline void LLWaterParamManager::setDensitySliderValue(F32 val)
+{
+	val /= 10;
+	val = 1.0f - val;
+	val *= val * val;
+//	val *= val;
+	mDensitySliderValue = val;
+}
+
+inline LLUUID LLWaterParamManager::getNormalMapID()
+{	
+	return mCurParams.mParamValues["normalMap"].asUUID();
+}
+
+inline bool LLWaterParamManager::setNormalMapID(const LLUUID& id)
+{
+	mCurParams.mParamValues["normalMap"] = id;
+	return true;
+}
+
+inline LLVector2 LLWaterParamManager::getWave1Dir(void)
+{
+	bool err;
+	return mCurParams.getVector2("wave1Dir", err);
+}
+
+inline LLVector2 LLWaterParamManager::getWave2Dir(void)
+{
+	bool err;
+	return mCurParams.getVector2("wave2Dir", err);
+}
+
+inline F32 LLWaterParamManager::getScaleAbove(void)
+{
+	bool err;
+	return mCurParams.getFloat("scaleAbove", err);
+}
+
+inline F32 LLWaterParamManager::getScaleBelow(void)
+{
+	bool err;
+	return mCurParams.getFloat("scaleBelow", err);
+}
+
+inline LLVector3 LLWaterParamManager::getNormalScale(void)
+{
+	bool err;
+	return mCurParams.getVector3("normScale", err);
+}
+
+inline F32 LLWaterParamManager::getFresnelScale(void)
+{
+	bool err;
+	return mCurParams.getFloat("fresnelScale", err);
+}
+
+inline F32 LLWaterParamManager::getFresnelOffset(void)
+{
+	bool err;
+	return mCurParams.getFloat("fresnelOffset", err);
+}
+
+inline F32 LLWaterParamManager::getBlurMultiplier(void)
+{
+	bool err;
+	return mCurParams.getFloat("blurMultiplier", err);
+}
+
+inline LLColor4 LLWaterParamManager::getFogColor(void)
+{
+	bool err;
+	return LLColor4(mCurParams.getVector4("waterFogColor", err));
+}
+
+#endif